<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<!-- NewPage -->
<html lang="de">
<head>
<meta http-equiv="Content-Type" content="text/html" charset="UTF-8">
<title>StrLookup (Apache Commons Lang 3.3.2 API)</title>
<link rel="stylesheet" type="text/css" href="../../../../../stylesheet.css" title="Style">
</head>
<body>
<script type="text/javascript"><!--
    if (location.href.indexOf('is-external=true') == -1) {
        parent.document.title="StrLookup (Apache Commons Lang 3.3.2 API)";
    }
//-->
</script>
<noscript>
<div>JavaScript is disabled on your browser.</div>
</noscript>
<!-- ========= START OF TOP NAVBAR ======= -->
<div class="topNav"><a name="navbar_top">
<!--   -->
</a><a href="#skip-navbar_top" title="Skip navigation links"></a><a name="navbar_top_firstrow">
<!--   -->
</a>
<ul class="navList" title="Navigation">
<li><a href="../../../../../overview-summary.html">Overview</a></li>
<li><a href="package-summary.html">Package</a></li>
<li class="navBarCell1Rev">Class</li>
<li><a href="class-use/StrLookup.html">Use</a></li>
<li><a href="package-tree.html">Tree</a></li>
<li><a href="../../../../../deprecated-list.html">Deprecated</a></li>
<li><a href="../../../../../index-all.html">Index</a></li>
<li><a href="../../../../../help-doc.html">Help</a></li>
</ul>
</div>
<div class="subNav">
<ul class="navList">
<li><a href="../../../../../org/apache/commons/lang3/text/StrBuilder.html" title="class in org.apache.commons.lang3.text"><span class="strong">Prev Class</span></a></li>
<li><a href="../../../../../org/apache/commons/lang3/text/StrMatcher.html" title="class in org.apache.commons.lang3.text"><span class="strong">Next Class</span></a></li>
</ul>
<ul class="navList">
<li><a href="../../../../../index.html?org/apache/commons/lang3/text/StrLookup.html" target="_top">Frames</a></li>
<li><a href="StrLookup.html" target="_top">No Frames</a></li>
</ul>
<ul class="navList" id="allclasses_navbar_top">
<li><a href="../../../../../allclasses-noframe.html">All Classes</a></li>
</ul>
<div>
<script type="text/javascript"><!--
  allClassesLink = document.getElementById("allclasses_navbar_top");
  if(window==top) {
    allClassesLink.style.display = "block";
  }
  else {
    allClassesLink.style.display = "none";
  }
  //-->
</script>
</div>
<div>
<ul class="subNavList">
<li>Summary:&nbsp;</li>
<li>Nested&nbsp;|&nbsp;</li>
<li>Field&nbsp;|&nbsp;</li>
<li><a href="#constructor_summary">Constr</a>&nbsp;|&nbsp;</li>
<li><a href="#method_summary">Method</a></li>
</ul>
<ul class="subNavList">
<li>Detail:&nbsp;</li>
<li>Field&nbsp;|&nbsp;</li>
<li><a href="#constructor_detail">Constr</a>&nbsp;|&nbsp;</li>
<li><a href="#method_detail">Method</a></li>
</ul>
</div>
<a name="skip-navbar_top">
<!--   -->
</a></div>
<!-- ========= END OF TOP NAVBAR ========= -->
<!-- ======== START OF CLASS DATA ======== -->
<div class="header">
<div class="subTitle">org.apache.commons.lang3.text</div>
<h2 title="Class StrLookup" class="title">Class StrLookup&lt;V&gt;</h2>
</div>
<div class="contentContainer">
<ul class="inheritance">
<li><a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">java.lang.Object</a></li>
<li>
<ul class="inheritance">
<li>org.apache.commons.lang3.text.StrLookup&lt;V&gt;</li>
</ul>
</li>
</ul>
<div class="description">
<ul class="blockList">
<li class="blockList">
<hr>
<br>
<pre>public abstract class <span class="strong">StrLookup&lt;V&gt;</span>
extends <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></pre>
<div class="block">Lookup a String key to a String value.
 <p>
 This class represents the simplest form of a string to string map.
 It has a benefit over a map in that it can create the result on
 demand based on the key.
 <p>
 This class comes complete with various factory methods.
 If these do not suffice, you can subclass and implement your own matcher.
 <p>
 For example, it would be possible to implement a lookup that used the
 key as a primary key, and looked up the value on demand from the database</div>
<dl><dt><span class="strong">Since:</span></dt>
  <dd>2.2</dd>
<dt><span class="strong">Version:</span></dt>
  <dd>$Id: StrLookup.java 1583482 2014-03-31 22:54:57Z niallp $</dd></dl>
</li>
</ul>
</div>
<div class="summary">
<ul class="blockList">
<li class="blockList">
<!-- ======== CONSTRUCTOR SUMMARY ======== -->
<ul class="blockList">
<li class="blockList"><a name="constructor_summary">
<!--   -->
</a>
<h3>Constructor Summary</h3>
<table class="overviewSummary" border="0" cellpadding="3" cellspacing="0" summary="Constructor Summary table, listing constructors, and an explanation">
<caption><span>Constructors</span><span class="tabEnd">&nbsp;</span></caption>
<tr>
<th class="colFirst" scope="col">Modifier</th>
<th class="colLast" scope="col">Constructor and Description</th>
</tr>
<tr class="altColor">
<td class="colFirst"><code>protected </code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/commons/lang3/text/StrLookup.html#StrLookup()">StrLookup</a></strong>()</code>
<div class="block">Constructor.</div>
</td>
</tr>
</table>
</li>
</ul>
<!-- ========== METHOD SUMMARY =========== -->
<ul class="blockList">
<li class="blockList"><a name="method_summary">
<!--   -->
</a>
<h3>Method Summary</h3>
<table class="overviewSummary" border="0" cellpadding="3" cellspacing="0" summary="Method Summary table, listing methods, and an explanation">
<caption><span>Methods</span><span class="tabEnd">&nbsp;</span></caption>
<tr>
<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Method and Description</th>
</tr>
<tr class="altColor">
<td class="colFirst"><code>abstract <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/commons/lang3/text/StrLookup.html#lookup(java.lang.String)">lookup</a></strong>(<a href="http://docs.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;key)</code>
<div class="block">Looks up a String key to a String value.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static &lt;V&gt;&nbsp;<a href="../../../../../org/apache/commons/lang3/text/StrLookup.html" title="class in org.apache.commons.lang3.text">StrLookup</a>&lt;V&gt;</code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/commons/lang3/text/StrLookup.html#mapLookup(java.util.Map)">mapLookup</a></strong>(<a href="http://docs.oracle.com/javase/6/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a>&lt;<a href="http://docs.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>,V&gt;&nbsp;map)</code>
<div class="block">Returns a lookup which looks up values using a map.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static <a href="../../../../../org/apache/commons/lang3/text/StrLookup.html" title="class in org.apache.commons.lang3.text">StrLookup</a>&lt;?&gt;</code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/commons/lang3/text/StrLookup.html#noneLookup()">noneLookup</a></strong>()</code>
<div class="block">Returns a lookup which always returns null.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static <a href="../../../../../org/apache/commons/lang3/text/StrLookup.html" title="class in org.apache.commons.lang3.text">StrLookup</a>&lt;<a href="http://docs.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&gt;</code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/commons/lang3/text/StrLookup.html#systemPropertiesLookup()">systemPropertiesLookup</a></strong>()</code>
<div class="block">Returns a lookup which uses <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/System.html?is-external=true#getProperties()" title="class or interface in java.lang"><code>System properties</code></a>
 to lookup the key to value.</div>
</td>
</tr>
</table>
<ul class="blockList">
<li class="blockList"><a name="methods_inherited_from_class_java.lang.Object">
<!--   -->
</a>
<h3>Methods inherited from class&nbsp;java.lang.<a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></h3>
<code><a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#clone()" title="class or interface in java.lang">clone</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#equals(java.lang.Object)" title="class or interface in java.lang">equals</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#finalize()" title="class or interface in java.lang">finalize</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#getClass()" title="class or interface in java.lang">getClass</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#hashCode()" title="class or interface in java.lang">hashCode</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#notify()" title="class or interface in java.lang">notify</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#notifyAll()" title="class or interface in java.lang">notifyAll</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#toString()" title="class or interface in java.lang">toString</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#wait()" title="class or interface in java.lang">wait</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#wait(long)" title="class or interface in java.lang">wait</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#wait(long, int)" title="class or interface in java.lang">wait</a></code></li>
</ul>
</li>
</ul>
</li>
</ul>
</div>
<div class="details">
<ul class="blockList">
<li class="blockList">
<!-- ========= CONSTRUCTOR DETAIL ======== -->
<ul class="blockList">
<li class="blockList"><a name="constructor_detail">
<!--   -->
</a>
<h3>Constructor Detail</h3>
<a name="StrLookup()">
<!--   -->
</a>
<ul class="blockListLast">
<li class="blockList">
<h4>StrLookup</h4>
<pre>protected&nbsp;StrLookup()</pre>
<div class="block">Constructor.</div>
</li>
</ul>
</li>
</ul>
<!-- ============ METHOD DETAIL ========== -->
<ul class="blockList">
<li class="blockList"><a name="method_detail">
<!--   -->
</a>
<h3>Method Detail</h3>
<a name="noneLookup()">
<!--   -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>noneLookup</h4>
<pre>public static&nbsp;<a href="../../../../../org/apache/commons/lang3/text/StrLookup.html" title="class in org.apache.commons.lang3.text">StrLookup</a>&lt;?&gt;&nbsp;noneLookup()</pre>
<div class="block">Returns a lookup which always returns null.</div>
<dl><dt><span class="strong">Returns:</span></dt><dd>a lookup that always returns null, not null</dd></dl>
</li>
</ul>
<a name="systemPropertiesLookup()">
<!--   -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>systemPropertiesLookup</h4>
<pre>public static&nbsp;<a href="../../../../../org/apache/commons/lang3/text/StrLookup.html" title="class in org.apache.commons.lang3.text">StrLookup</a>&lt;<a href="http://docs.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&gt;&nbsp;systemPropertiesLookup()</pre>
<div class="block">Returns a lookup which uses <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/System.html?is-external=true#getProperties()" title="class or interface in java.lang"><code>System properties</code></a>
 to lookup the key to value.
 <p>
 If a security manager blocked access to system properties, then null will
 be returned from every lookup.
 <p>
 If a null key is used, this lookup will throw a NullPointerException.</div>
<dl><dt><span class="strong">Returns:</span></dt><dd>a lookup using system properties, not null</dd></dl>
</li>
</ul>
<a name="mapLookup(java.util.Map)">
<!--   -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>mapLookup</h4>
<pre>public static&nbsp;&lt;V&gt;&nbsp;<a href="../../../../../org/apache/commons/lang3/text/StrLookup.html" title="class in org.apache.commons.lang3.text">StrLookup</a>&lt;V&gt;&nbsp;mapLookup(<a href="http://docs.oracle.com/javase/6/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a>&lt;<a href="http://docs.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>,V&gt;&nbsp;map)</pre>
<div class="block">Returns a lookup which looks up values using a map.
 <p>
 If the map is null, then null will be returned from every lookup.
 The map result object is converted to a string using toString().</div>
<dl><dt><span class="strong">Type Parameters:</span></dt><dd><code>V</code> - the type of the values supported by the lookup</dd><dt><span class="strong">Parameters:</span></dt><dd><code>map</code> - the map of keys to values, may be null</dd>
<dt><span class="strong">Returns:</span></dt><dd>a lookup using the map, not null</dd></dl>
</li>
</ul>
<a name="lookup(java.lang.String)">
<!--   -->
</a>
<ul class="blockListLast">
<li class="blockList">
<h4>lookup</h4>
<pre>public abstract&nbsp;<a href="http://docs.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;lookup(<a href="http://docs.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;key)</pre>
<div class="block">Looks up a String key to a String value.
 <p>
 The internal implementation may use any mechanism to return the value.
 The simplest implementation is to use a Map. However, virtually any
 implementation is possible.
 <p>
 For example, it would be possible to implement a lookup that used the
 key as a primary key, and looked up the value on demand from the database
 Or, a numeric based implementation could be created that treats the key
 as an integer, increments the value and return the result as a string -
 converting 1 to 2, 15 to 16 etc.
 <p>
 The <a href="../../../../../org/apache/commons/lang3/text/StrLookup.html#lookup(java.lang.String)"><code>lookup(String)</code></a> method always returns a String, regardless of
 the underlying data, by converting it as necessary. For example:
 <pre>
 Map&lt;String, Object&gt; map = new HashMap&lt;String, Object&gt;();
 map.put("number", Integer.valueOf(2));
 assertEquals("2", StrLookup.mapLookup(map).lookup("number"));
 </pre></div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>key</code> - the key to be looked up, may be null</dd>
<dt><span class="strong">Returns:</span></dt><dd>the matching value, null if no match</dd></dl>
</li>
</ul>
</li>
</ul>
</li>
</ul>
</div>
</div>
<!-- ========= END OF CLASS DATA ========= -->
<!-- ======= START OF BOTTOM NAVBAR ====== -->
<div class="bottomNav"><a name="navbar_bottom">
<!--   -->
</a><a href="#skip-navbar_bottom" title="Skip navigation links"></a><a name="navbar_bottom_firstrow">
<!--   -->
</a>
<ul class="navList" title="Navigation">
<li><a href="../../../../../overview-summary.html">Overview</a></li>
<li><a href="package-summary.html">Package</a></li>
<li class="navBarCell1Rev">Class</li>
<li><a href="class-use/StrLookup.html">Use</a></li>
<li><a href="package-tree.html">Tree</a></li>
<li><a href="../../../../../deprecated-list.html">Deprecated</a></li>
<li><a href="../../../../../index-all.html">Index</a></li>
<li><a href="../../../../../help-doc.html">Help</a></li>
</ul>
</div>
<div class="subNav">
<ul class="navList">
<li><a href="../../../../../org/apache/commons/lang3/text/StrBuilder.html" title="class in org.apache.commons.lang3.text"><span class="strong">Prev Class</span></a></li>
<li><a href="../../../../../org/apache/commons/lang3/text/StrMatcher.html" title="class in org.apache.commons.lang3.text"><span class="strong">Next Class</span></a></li>
</ul>
<ul class="navList">
<li><a href="../../../../../index.html?org/apache/commons/lang3/text/StrLookup.html" target="_top">Frames</a></li>
<li><a href="StrLookup.html" target="_top">No Frames</a></li>
</ul>
<ul class="navList" id="allclasses_navbar_bottom">
<li><a href="../../../../../allclasses-noframe.html">All Classes</a></li>
</ul>
<div>
<script type="text/javascript"><!--
  allClassesLink = document.getElementById("allclasses_navbar_bottom");
  if(window==top) {
    allClassesLink.style.display = "block";
  }
  else {
    allClassesLink.style.display = "none";
  }
  //-->
</script>
</div>
<div>
<ul class="subNavList">
<li>Summary:&nbsp;</li>
<li>Nested&nbsp;|&nbsp;</li>
<li>Field&nbsp;|&nbsp;</li>
<li><a href="#constructor_summary">Constr</a>&nbsp;|&nbsp;</li>
<li><a href="#method_summary">Method</a></li>
</ul>
<ul class="subNavList">
<li>Detail:&nbsp;</li>
<li>Field&nbsp;|&nbsp;</li>
<li><a href="#constructor_detail">Constr</a>&nbsp;|&nbsp;</li>
<li><a href="#method_detail">Method</a></li>
</ul>
</div>
<a name="skip-navbar_bottom">
<!--   -->
</a></div>
<!-- ======== END OF BOTTOM NAVBAR ======= -->
<p class="legalCopy"><small>Copyright &#169; 2001&#x2013;2014 <a href="http://www.apache.org/">The Apache Software Foundation</a>. All rights reserved.</small></p>
</body>
</html>
